midterms

Question 1

is a method that has only the heading with no body

Answer 1

abstract method

Question 2

a class that is declared with the reserved word abstract in its heading.

Answer 2

abstract class

Question 3

they “wrap” the primitive data type into an object of that class.

Answer 3

Wrapper class

Question 4

an abnormal condition that occurs at runtime.

Answer 4

Exception

Question 5

block of code that always executes, regardless of whether or not an exception is thrown.

Answer 5

finally block

Question 6

handles the exception

Answer 6

catch block

Question 7

a section of a code that executes when an Exception is passed to it.

Answer 7

catch block

Question 8

Constructs a new String with the value “” containing no characters. The value is not null.

Answer 8

public String()

Question 9

Constructs a new String that contains the same sequence of characters as the specified String argument.

Answer 9

public String (String value)

Question 10

Constructs a new String containing the same sequence of characters contained in the
character array argument.

Answer 10

public String (char[] value)

Question 11

Compares the current String object to str, and returns 0 only if the two strings contain the same sequence of characters (case sensative)

Answer 11

public int compareTo (String str)

Question 12

Compares the current String object with obj and returns true if obj is another String
containing the same sequence of characters; false is returned otherwise.

Answer 12

public boolean equals (Object obj)

Question 13

Performs a case-insensitive comparison of the current String object with str and returns true if str is another String containing the same sequence (ignoring case) of characters; false is returned otherwise.

Answer 13

public boolean equalsIgnoreCase (String str)

Question 14

Returns the character at the specified index. The index may range from 0 to length() - 1.

Answer 14

public char charAt( int index )

Question 15

Concatenates the specified String to the end of the current (this) String. If the length of the argument string is 0, then this String is returned.

Answer 15

public String concat( String str )

Question 16

Returns the length of the current String.

Answer 16

public int length()

Question 17

Converts the String to uppercase.

Answer 17

public String toUpperCase()

Question 18

Converts the String to lowercase

Answer 18

public String toLowerCase()